Replaces the regex defined in app/models/user.rb with that in more_core_extensions as the current regex is too prohibitive. TLDs are OK { is OK , is OK More details in: https://github.com/ManageIQ/manageiq/pull/12827 https://github.com/ManageIQ/manageiq/issues/12781 https://github.com/ManageIQ/more_core_extensions/pull/33